
/*
 * Copyright (C) Yichun Zhang (agentzh)
 */


#ifndef _NGX_HTTP_LUA_SCRIPT_H_INCLUDED_
#define _NGX_HTTP_LUA_SCRIPT_H_INCLUDED_


#include "ngx_http_lua_common.h"


typedef struct
{
    ngx_log_t  *log;
    ngx_pool_t *pool;
    ngx_str_t  *source;

    ngx_array_t **lengths;
    ngx_array_t **values;

    ngx_uint_t variables;

    unsigned complete_lengths : 1;
    unsigned complete_values  : 1;
} ngx_http_lua_script_compile_t;


typedef struct
{
    ngx_str_t value;
    void     *lengths;
    void     *values;
} ngx_http_lua_complex_value_t;


typedef struct
{
    ngx_log_t                    *log;
    ngx_pool_t                   *pool;
    ngx_str_t                    *value;
    ngx_http_lua_complex_value_t *complex_value;
} ngx_http_lua_compile_complex_value_t;


typedef struct
{
    u_char *ip;
    u_char *pos;

    ngx_str_t buf;

    int       *captures;
    ngx_uint_t ncaptures;
    u_char    *captures_data;

    unsigned skip : 1;

    ngx_log_t *log;
} ngx_http_lua_script_engine_t;


typedef void (*ngx_http_lua_script_code_pt)(ngx_http_lua_script_engine_t *e);
typedef size_t (*ngx_http_lua_script_len_code_pt)(
    ngx_http_lua_script_engine_t *e);


typedef struct
{
    ngx_http_lua_script_code_pt code;
    uintptr_t                   len;
} ngx_http_lua_script_copy_code_t;


typedef struct
{
    ngx_http_lua_script_code_pt code;
    uintptr_t                   n;
} ngx_http_lua_script_capture_code_t;


ngx_int_t
ngx_http_lua_compile_complex_value(ngx_http_lua_compile_complex_value_t *ccv);
ngx_int_t ngx_http_lua_complex_value(ngx_http_request_t *r, ngx_str_t *subj,
                                     size_t offset, ngx_int_t count, int *cap,
                                     ngx_http_lua_complex_value_t *val,
                                     luaL_Buffer                  *luabuf);


#endif /* _NGX_HTTP_LUA_SCRIPT_H_INCLUDED_ */

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